- how to use jQuery (selector, methods etc)
- practiced chrome dev tools (src tab break point, checked step by step, used watch tab )
- processed refactoring ( tried DRY coding )
- used regular expression validating inputFields (especially on email field, I put differen regEx on submit event and keup event )
Not familar with manipulating CSS, need to learn more about CSS ( especially layout method )
There is a problem, when key typed in on Credit Card number, Zip code, CVV number, the 'expiration date:' lable MOVE!. I couldn't figure out why it moves... need to figure out.